Home / 128,659.08-193,043.70-53,796.72

Finding the Fourth Proportional to 128,659.08, 193,043.70 and 53,796.72

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Solution

The fourth proportional to 128,659.08, 193,043.70 and 53,796.72 is: 80,718.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,659.08 : 193,043.70 = 53,796.72 : x
  2. Step 2: Convert to fraction form
    128,659.08/193,043.70 = 53,796.72/x
  3. Step 3: Cross multiply
    128,659.08x = 193,043.70 × 53,796.72
  4. Step 4: Simplify right side
    128,659.08x = 10,385,117,876.66
  5. Step 5: Solve for x
    x = 10,385,117,876.66/128,659.08
  6. Step 6: Final answer
    x = 80,718.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.